@Elecrow said:
The I043 TX0 should be connected to RXD, and I044 RX0 connect to TXD
Thanks for answer. Some people talks that XY-485 module must be connected as RX-RXD, TX-TXD. Other people talks that ESP32 hardware UART is not compatible with XY-485 module. https://aliexpress.ru/item/32857507366.html
What problem in that?
I have tried to connect XY-485 module to CrowPanel thorough Arduino Nano:
XY-485 UART <-> Arduino Nano Software Serial2 <-> Arduino Nano Hardware Serial UART0 <-> CrowPanel UART0.
Arduino Nano works in transmitter-receiver program mode.
And this system works! Dual channel transmission and receiving works fine. Why CrowPanel UART0 incompatible with XY-485 UART based on usual MAX485 chip?
Comments
I have tried to connect RXD pin of XY-485 to laptop thorough USB/UART convertor. Data have been received successfully .
02 May 2024 Aliexpress
No ideas?
The I043 TX0 should be connected to RXD, and I044 RX0 connect to TXD
Thanks for answer. Some people talks that XY-485 module must be connected as RX-RXD, TX-TXD. Other people talks that ESP32 hardware UART is not compatible with XY-485 module. https://aliexpress.ru/item/32857507366.html
What problem in that?
I have tried to connect XY-485 module to CrowPanel thorough Arduino Nano:
XY-485 UART <-> Arduino Nano Software Serial2 <-> Arduino Nano Hardware Serial UART0 <-> CrowPanel UART0.
Arduino Nano works in transmitter-receiver program mode.
And this system works! Dual channel transmission and receiving works fine.
Why CrowPanel UART0 incompatible with XY-485 UART based on usual MAX485 chip?
Please answer me!